I've got a question about the different numbers on arrows. I shoot Beman Matrix (Carbonmetal-Matrix) arrows 340... i shoot a Mathews Switchback XT, 30" draw, 70# Limbs, arrows are 30.5 inches. I noticed alot of the guys in my winter league had 400 on their arrows. I mostly hunt- league shooting is just a filler for me. I was wondering if there were any advantages/disadvantages to what i'm shooting vs. what the other guys shoot.